content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -------------------------
   * GanttCategoryDataset.java
   * -------------------------
   * (C) Copyright 2003-2008, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 16-Sep-2003 : Version 1, based on MultiIntervalCategoryDataset (DG);
   * 23-Sep-2003 : Fixed Checkstyle issues (DG);
   * 12-May-2008 : Updated API docs (DG);
   *
   */
  
   package org.jfree.data.gantt;
  
  import org.jfree.data.category.IntervalCategoryDataset;
  
  /**
   * An extension of the {@link IntervalCategoryDataset} interface that adds
   * support for multiple sub-intervals.
   */
  public interface GanttCategoryDataset extends IntervalCategoryDataset {
  
      /**
       * Returns the percent complete for a given item.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       *
       * @return The percent complete.
       *
       * @see #getPercentComplete(Comparable, Comparable)
       */
      public Number getPercentComplete(int row, int column);
  
      /**
       * Returns the percent complete for a given item.
       *
       * @param rowKey  the row key.
       * @param columnKey  the column key.
       *
       * @return The percent complete.
       *
       * @see #getPercentComplete(int, int)
       */
      public Number getPercentComplete(Comparable rowKey, Comparable columnKey);
  
      /**
       * Returns the number of sub-intervals for a given item.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       *
       * @return The sub-interval count.
       *
       * @see #getSubIntervalCount(Comparable, Comparable)
       */
      public int getSubIntervalCount(int row, int column);
  
      /**
       * Returns the number of sub-intervals for a given item.
       *
       * @param rowKey  the row key.
       * @param columnKey  the column key.
       *
       * @return The sub-interval count.
       *
       * @see #getSubIntervalCount(int, int)
       */
      public int getSubIntervalCount(Comparable rowKey, Comparable columnKey);
  
      /**
       * Returns the start value of a sub-interval for a given item.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       * @param subinterval  the sub-interval index (zero-based).
       *
       * @return The start value (possibly <code>null</code>).
       *
       * @see #getEndValue(int, int, int)
       */
      public Number getStartValue(int row, int column, int subinterval);
  
      /**
       * Returns the start value of a sub-interval for a given item.
       *
       * @param rowKey  the row key.
       * @param columnKey  the column key.
       * @param subinterval  the sub-interval.
       *
       * @return The start value (possibly <code>null</code>).
       *
       * @see #getEndValue(Comparable, Comparable, int)
       */
      public Number getStartValue(Comparable rowKey, Comparable columnKey,
                                  int subinterval);
  
      /**
       * Returns the end value of a sub-interval for a given item.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       * @param subinterval  the sub-interval.
       *
       * @return The end value (possibly <code>null</code>).
       *
       * @see #getStartValue(int, int, int)
       */
      public Number getEndValue(int row, int column, int subinterval);
  
      /**
       * Returns the end value of a sub-interval for a given item.
       *
       * @param rowKey  the row key.
       * @param columnKey  the column key.
       * @param subinterval  the sub-interval.
       *
       * @return The end value (possibly <code>null</code>).
       *
       * @see #getStartValue(Comparable, Comparable, int)
       */
      public Number getEndValue(Comparable rowKey, Comparable columnKey,
                                int subinterval);
  
      /**
       * Returns the percentage complete value of a sub-interval for a given item.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       * @param subinterval  the sub-interval.
       *
       * @return The percent complete value (possibly <code>null</code>).
       *
       * @see #getPercentComplete(Comparable, Comparable, int)
       */
      public Number getPercentComplete(int row, int column, int subinterval);
  
      /**
       * Returns the percentage complete value of a sub-interval for a given item.
       *
       * @param rowKey  the row key.
       * @param columnKey  the column key.
       * @param subinterval  the sub-interval.
       *
       * @return The percent complete value (possibly <code>null</code>).
       *
       * @see #getPercentComplete(int, int, int)
       */
      public Number getPercentComplete(Comparable rowKey, Comparable columnKey,
                                       int subinterval);
  
  }
  